////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////

#ifndef TIMER_UNIX_H
#define TIMER_UNIX_H

#include "LibrarySystemExport.h"

#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>

#include <vector>


namespace CasaEngine
{

////////////////////////////////////////////////////////////
/// Unix implementation of Platform 
/// Give access to various global system functions
////////////////////////////////////////////////////////////
class LIBRARY_SYSTEM_EXPORT Timer
{
public :
    //static double GetSystemTime();
	//static double DiffSystemTime(double start_, double end_);

public:
	Timer();                                    // default constructor
	~Timer();                                   // default destructor

	void   start();                             // start timer
	void   stop();                              // stop the timer
	double getElapsedTime();                    // get elapsed time in second
	double getElapsedTimeInSec();               // get elapsed time in second (same as getElapsedTime)
	double getElapsedTimeInMilliSec();          // get elapsed time in milli-second
	double getElapsedTimeInMicroSec();          // get elapsed time in micro-second

protected:

private:
	double startTimeInMicroSec;                 // starting time in micro-second
	double endTimeInMicroSec;                   // ending time in micro-second
	int    stopped;                             // stop flag 

	timeval startCount;                         //
	timeval endCount;                           //

};

} // namespace CasaEngine


#endif // TIMER_UNIX_H
